The National Weather Service forecasts mostly cloudy skies here in Cobb County on Sunday, April 20, 2025, with a high near 85 degrees.

Tonight it is expected to be mostly cloudy, with an overnight low of around 63 degrees.

Bonus for the more weather-curious among you … To read an article about interpreting a weather news report with some of the typical terminology defined, follow this link.

To read an article about interpreting a weather news report, with some of the typical terminology defined, follow this link.

What does the extended forecast have in store?

This forecast is centered on Dobbins Air Reserve Base in Marietta.

Today

Mostly cloudy, with a high near 85. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

Tonight

Mostly cloudy, with a low around 63. South wind around 5 mph, with gusts as high as 15 mph.

Monday

Partly sunny, with a high near 85. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Monday Night

A 40 percent chance of showers and thunderstorms, mainly after 2 a.m. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.

Tuesday

A chance of showers before 11 a.m, then a chance of showers and thunderstorms between 11 a.m and 2 p.m, then showers likely and possibly a thunderstorm after 2 p.m. Mostly cloudy, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60 percent.

Tuesday Night

Showers and thunderstorms likely before 11 p.m, then a slight chance of showers between 11 p.m and 2 a.m, then a slight chance of showers and thunderstorms after 2 a.m. Mostly cloudy, with a low around 61. Chance of precipitation is 60 percent.

Wednesday

A slight chance of showers and thunderstorms before 8 a.m, then a slight chance of showers between 8 a.m and 2 p.m, then a chance of showers and thunderstorms after 2 p.m. Partly sunny, with a high near 84. Chance of precipitation is 40 percent.

Wednesday Night

A 30 percent chance of showers and thunderstorms, mainly before 8 p.m. Mostly cloudy, with a low around 62.

Thursday

A 40 percent chance of showers, mainly after 2 p.m. Partly sunny, with a high near 84.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly before 8 p.m. Mostly cloudy, with a low around 63.

Friday

A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.

Friday Night

A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.

Saturday

A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

What was the climate like in the latest reporting period?

The NWS climate summary for metro Atlanta has now been updated with March 2025 figures.

In an article entitled What is the Difference between Climate and Weather?, the National Ocean Service describes the difference as follows:

“Weather is what you see outside on any particular day. So, for example, it may be 75° degrees and sunny or it could be 20° degrees with heavy snow. That’s the weather.

“Climate is the average of that weather. For example, you can expect snow in the Northeast in January or for it to be hot and humid in the Southeast in July. This is climate. The climate record also includes extreme values such as record high temperatures or record amounts of rainfall. If you’ve ever heard your local weather person say “today we hit a record high for this day,” she is talking about climate records.

“So when we are talking about climate change, we are talking about changes in long-term averages of daily weather. In most places, weather can change from minute-to-minute, hour-to-hour, day-to-day, and season-to-season. Climate, however, is the average of weather over time and space.”

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The climate report for the Atlanta area for the previous month shows how much departure from the average temperatures that month represents. The average temperature for a date is the average over a 30-year period.

Date	High	Low	Average	Deviation from norm	Precipitation
2025-03-01	75	46	60.5	8.6	0
2025-03-02	57	36	46.5	-5.7	0
2025-03-03	64	36	50	-2.4	0
2025-03-04	72	44	58	5.3	0
2025-03-05	65	41	53	0.1	1.05
2025-03-06	56	37	46.5	-6.7	0
2025-03-07	68	38	53	-0.4	0
2025-03-08	76	56	66	12.3	T
2025-03-09	58	47	52.5	-1.4	0.37
2025-03-10	55	45	50	-4.2	0.56
2025-03-11	76	42	59	4.6	0
2025-03-12	76	48	62	7.4	0
2025-03-13	74	55	64.5	9.6	0
2025-03-14	75	55	65	9.9	0
2025-03-15	78	60	69	13.6	0.08
2025-03-16	74	49	61.5	5.9	0.44
2025-03-17	63	42	52.5	-3.4	0
2025-03-18	77	42	59.5	3.4	0
2025-03-19	79	47	63	6.7	0
2025-03-20	67	42	54.5	-2.1	0.02
2025-03-21	66	36	51	-5.8	0
2025-03-22	74	45	59.5	2.4	0
2025-03-23	77	47	62	4.7	0
2025-03-24	66	53	59.5	2	0.14
2025-03-25	80	46	63	5.2	0
2025-03-26	75	51	63	5	0
2025-03-27	75	50	62.5	4.2	0
2025-03-28	81	53	67	8.5	0
2025-03-29	74	63	68.5	9.8	0
2025-03-30	76	61	68.5	9.5	0.01
2025-03-31	70	59	64.5	5.3	0.34

For much more information on the climate in our area, visit the NWS Climate FAQ for the Atlanta area.

What does the National Weather Service do?

The National Weather Service (NWS) is a part of the National Oceanic and Atmospheric Administration (NOAA).

The NWS describes its role as follows:

“The National Weather Service (NWS) provides weather, water, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy. 

“These services include Forecasts and Observations, Warnings, Impact-based Decision Support Services, and Education in an effort to build a Weather-Ready Nation. The ultimate goal is to have a society that is prepared for and responds to weather, water and climate events.”